package 数组变换;

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        int n = in.nextInt();
        int[] a = new int[n];
        int max = 0;
        for (int i = 0; i < n; i++) {
            a[i] = in.nextInt();
            max = Math.max(max, a[i]);
        }
        for (int i = 0; i < n; i++) {
            int t = max / a[i];
            if (t % 2 != 0 && t != 1) {
                System.out.println("NO");
                return;
            }
        }
        System.out.println("YES");
    }
}
